docs: def dP_wedge_meter(D, H, P1, P2):
      r'''Calculates the non-recoverable pressure drop of a wedge meter
      based on the measured pressures before and at the wedge meter, and the 
      geometry of the wedge meter according to [1]_.
      
      .. math::
          \Delta \bar \omega = (1.09 - 0.79\beta)\Delta P
          
      Parameters
      ----------
      D : float
          Upstream internal pipe diameter, [m]
      H : float
          Portion of the diameter of the clear segment of the pipe up to the 
          wedge blocking flow; the height of the pipe up to the wedge, [m]
      P1 : float
          Static pressure of fluid upstream of wedge meter at the cross-section 
          of the pressure tap, [Pa]
      P2 : float
          Static pressure of fluid at the end of the wedge meter pressure tap, [
          Pa]
  
      Returns
      -------
      dP : float
          Non-recoverable pressure drop of the wedge meter, [Pa]
  
      Notes
      -----
      The recoverable pressure drop should be recovered by 5 pipe diameters 
      downstream of the wedge meter.
      
      Examples
      --------
      >>> dP_wedge_meter(1, .7, 1E6, 9.5E5)
      20344.849697483587
      
      References
      ----------
      .. [1] ISO/DIS 5167-6 - Measurement of Fluid Flow by Means of Pressure 
         Differential Devices Inserted in Circular Cross-Section Conduits Running 
         Full -- Part 6: Wedge Meters.
      '''
      dP = P1 - P2
      beta = diameter_ratio_wedge_meter(D, H)
      return (1.09 - 0.79*beta)*dP